Compute Module • CM5 with on board eMMC, GPIO 22 to 27 as external storage.

Hello,

The Raspberry Pi CM5 has the following pin assignments:

GPIO 22 – SDIO0_CLK

GPIO 23 – SDIO0_CMD

GPIO 24 – SDIO0_DAT[0]

GPIO 25 – SDIO0_DAT[1]

GPIO 26 – SDIO0_DAT[2]

GPIO 27 – SDIO0_DAT[3]

I have the version with onboard eMMC. Can I use these GPIOs to connect an external SD card for storage? I would like to use it for storing files just like a thumbstick.

Also can i make "hot swapable" ?

Statistics: Posted by Diminatto — Fri Sep 19, 2025 10:14 pm

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